Relationship between Dizziness and the Core Vestibular Projection Injury in Patients with Mild Traumatic Brain Injury

Some studies have reported that a core vestibular projection (CVP) injury is associated with dizziness following a brain injury using diffusion tensor tractography (DTT). On the other hand, there has been no DTT study on dizziness caused by a CVP injury in patients with mild traumatic brain injury (TBI). In this study, DTT was used to examine the relationship between dizziness and CVP injury in patients with mild TBI. Forty-three patients with mild TBI and twenty-nine normal subjects were recruited. The patients were classified into two groups based on the dizziness score: group A, patients with a dizziness score less than 2 on the sub-item score for dizziness in the Rivermead Post-concussion Symptoms Questionnaire; group B, patients with a dizziness score above 2. The tract volume (TV) in group B was significantly lower than group A and the control group (p < 0.05). By contrast, the TV in group A was similar to the control group (p > 0.05). Regarding the correlation, the dizziness score of all patients showed a strong negative correlation with the TV of the CVP (r = −0.711, p < 0.05). DTT revealed the CVP injury in patients with dizziness after mild TBI. In addition, the severity of dizziness of these patients was closely related to the injury severity of the CVP.

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Relationship between depression and dorsolateral prefronto-thalamic tract injury in patients with mild traumatic brain injury

Scientific Reports ◽

10.1038/s41598-020-76889-3 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Sung Ho Jang ◽

Hyeok Gyu Kwon

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Mild Traumatic Brain Injury ◽

Patient Group ◽

Diffusion Tensor ◽

The Other ◽

Control Group ◽

Mild Tbi ◽

Moderate Negative Correlation ◽

The Right

AbstractThe prefrontal lobe has been considered to be closely related to depression. This study examined the relationship between depression and three prefronto-thalamic tract (PF-TT) regions (the dorsolateral prefronto-thalamic tract [DLPF-TT], ventrolateral prefronto-thalamic tract [VLPF-TT], and the orbitofronto-thalamic tract [OF-TT]) in patients with mild traumatic brain injury (TBI), using diffusion tensor tractography (DTT). Thirty-seven patients with depression following mild TBI were recruited based on Beck Depression Inventory-II (BDI-II) scores. Thirty-one normal control subjects were also recruited. The three regions of the PF-TTs were reconstructed using probabilistic tractography and DTT parameters for each of the three PF-TT regions were determined. The tract volume of the DLPF-TT and OF-TT in the patient group showed a significant decrease compared to that of the control group (p < 0.05). The BDI-II score of the patient group showed a moderate negative correlation with the tract volume value of the right (r = − 0.33) and left (r = − 0.41) DLPF-TT (p < 0.05). On the other hand, no significant correlations were detected between the BDI-II score of the patient group and the values of the other DTT parameters values for the three PF-TT regions (p > 0.05). Using DTT, depression was found to be closely related to a DLPF-TT injury in patients with mild TBI. We believe that evaluation of the DLPF-TT using DTT would be helpful when assessing patients with depression following mild TBI. These results can provide useful information regarding the proper application of neuromodulation in the management of depression.

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Examining Microstructural White Matter in Active Duty Soldiers with a History of Mild Traumatic Brain Injury and Traumatic Stress

The Open Neuroimaging Journal ◽

10.2174/1874440001711010046 ◽

2017 ◽

Vol 11 (1) ◽

pp. 46-57 ◽

Cited By ~ 7

Author(s):

Michael N. Dretsch ◽

Rael T. Lange ◽

Jeffery S. Katz ◽

Adam Goodman ◽

Thomas A. Daniel ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

White Matter ◽

Mild Traumatic Brain Injury ◽

Psychological Health ◽

Traumatic Stress ◽

Diffusion Tensor ◽

Active Duty ◽

Control Group ◽

History Of

Background:There is a high comorbidity of posttraumatic stress (PTS) and mild traumatic brain injury (mTBI), with largely overlapping symptomatology, in military service members.Objective:To examine white matter integrity associated with PTS and mTBI as assessed using diffusion tensor imaging (DTI).Method:Seventy-four active-duty U.S. soldiers with PTS (n = 16) and PTS with co-morbid history of mTBI (PTS/mTBI; n = 28) were compared to a military control group (n = 30). Participants received a battery of neurocognitive and clinical symptom measures. The number of abnormal DTI values was determined (>2 SDs from the mean of the control group) for fractional anisotropy (FA) and mean diffusivity (MD), and then compared between groups. In addition, mean DTI values from white matter tracts falling into three categories were compared between groups: (i) projection tracts: superior, middle, and inferior cerebellar peduncles, pontine crossing tract, and corticospinal tract; (ii) association tracts: superior longitudinal fasciculus; and (iii) commissure tracts: cingulum bundle (cingulum-cingulate gyrus and cingulum-hippocampus), and corpus callosum.Results:The comorbid PTS/mTBI group had significantly greater traumatic stress, depression, anxiety, and post-concussive symptoms, and they performed worse on neurocognitive testing than those with PTS alone and controls. The groups differed greatly on several clinical variables, but contrary to what we hypothesized, they did not differ greatly on primary and exploratory analytic approaches of hetero-spatial whole brain DTI analyses.Conclusion:The findings suggest that psychological health conditions rather than pathoanatomical changes may be contributing to symptom presentation in this population.

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B-72 The Relationship between Anxiety and Postconcussive Symptomology in patients with Mild Traumatic Brain Injury

Archives of Clinical Neuropsychology ◽

10.1093/arclin/acz034.155 ◽

2019 ◽

Vol 34 (6) ◽

pp. 1020-1020

Author(s):

K Cornett

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Mild Traumatic Brain Injury ◽

Injury Severity ◽

Small Sample ◽

Future Research ◽

Control Group ◽

Patient Report ◽

The Relationship ◽

Report Measure

Abstract Objective Research literature has demonstrated the role that pre-morbid anxiety has in prolonging recovery from mild traumatic brain injury (mTBI). The aim of this investigation is to clarify the degree of the relationship between anxiety and postconcussive symptomology in patients with mTBI. Method This study compared scores from a patient-report measure of anxiety, the General Anxiety Disorder-7 (GAD-7), to scores from a patient-report measure of postconcussion symptom severity, the Neurobehavioral Symptom Inventory (NSI). Participants were recruited from September 2018 to December 2019 who had been referred for clinical evaluation to Rehabilitation Institute of Washington’s Brain Injury Services (a privately-run, interdisciplinary, outpatient clinic). 39 adult participants (30 males and nine females) completed both the GAD-7 and NSI. No control group was used. Injury severity level was ascertained via review of the medical records. Patients underwent an abbreviated evaluation with a clinical neuropsychologist. As a part of this initial evaluation, patients completed an intake packet, which included the NSI and GAD-7. Results The relationship between the ordinal variables (i.e., anxiety and postconscussive symptomology) was assessed using spearman’s rho. Anxiety had a strong, statistically significant relationship with postconcussive symptomology (rho = 0.670, p = 0.000). Conclusions Anxiety and postconcussive symptomology severity are associated in this population of patients with mTBI. Limitations of this current investigation include a small sample size and no control group. This study indicates the need for controlled studies in future research to address the above-encountered limitations. Nevertheless, this study lends support to the prevalence of anxiety in those with elevated postconcussive symptomology and the need to monitor this in assessment and treatment.

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Relationship Between Injured Cingulum and Impaired Consciousness in Patients with Hypoxic-Ischemic Brain Injury

10.21203/rs.3.rs-1154550/v1 ◽

2021 ◽

Author(s):

SungHO Jang ◽

YOUSUNG SEO

Keyword(s):

Brain Injury ◽

Diffusion Tensor ◽

Control Group ◽

Ischemic Brain Injury ◽

Impaired Consciousness ◽

Ischemic Brain ◽

Group A ◽

Hypoxic Ischemic Brain Injury ◽

Group B ◽

The Relationship

Abstract Objectives We investigated the relationship between cingulum injury and impaired consciousness in patients with hypoxic-ischemic brain injury (HI-BI) by using diffusion tensor tractography (DTT). Methods We recruited 29 patients with HI-BI and 25 normal control subjects. The patients were classified as intact consciousness (group A, 13 patients) or impaired consciousness (group B, 16 patients). The DTT parameters of fractional anisotropy (FA) and tract volume (TV) were estimated for both cinguli. Glasgow Coma Scale (GCS) and Coma Recovery Scale-Revised (CRS-R) scores were also evaluated. Results The FA and TV values of the cinguli in groups A and B were lower than those of the control group (p < 0.05), and the FA and TV values of group B were lower than those of group A (p < 0.05). The FA and TV values of the cinguli in group A were not significantly correlated with GCS and CRS-R scores (p > 0.05); however, regarding the group B, the FA correlations with GCS (r = 0.457, p < 0.05) and CRS-R (r = 0.494, p < 0.05) and those of TV with GCS (r = 0.500, p < 0.05) and CRS-R (r = 0.491, p < 0.05) were moderately positive. Conclusions We found a significant relationship between injury of the cingulum and impaired consciousness in patients with HI-BI. Our results suggest that an injured cingulum could be an appropriate target for neurointervention or neurorehabilitation in patients with impaired consciousness following HI-BI.

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Relationship Between Hyperhidrosis and Hypothalamic Injury in Patients With Mild Traumatic Brain Injury

10.21203/rs.3.rs-112407/v1 ◽

2020 ◽

Author(s):

Sung Ho Jang ◽

Hyeok Gyu Kwon

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Patient Group ◽

Diffusion Tensor ◽

Clinical Feature ◽

Control Group ◽

Mild Tbi ◽

Paroxysmal Sympathetic Hyperactivity ◽

Apparent Diffusion ◽

Hypothalamic Injury

Abstract Hyperhidrosis is clinical symptom of various diseases and is an important clinical feature of paroxysmal sympathetic hyperactivity(PSH). Traumatic brain injury(TBI) is the most common condition associated with PSH, and PSH has been mainly reported in moderate and severe TBI. However, very little has been reported on PSH or hyperhidrosis in mild TBI patients. In this study, we used diffusion tensor imaging(DTI) to investigate the relationship between hyperhidrosis and hypothalamic injury in patients with mild TBI. Seven patients with hyperhidrosis after mild TBI and 21 healthy controls were recruited for this study. The Hyperhidrosis Disease Severity Scale was used for evaluation of sweating at the time of DTI scanning. The fractional anisotropy(FA) and apparent diffusion coefficient(ADC) DTI parameters were measured in the hypothalamus. In the patient group, the FA values for both sides of the hypothalamus were significantly lower than those of the control group (p<0.05). By contrast, the ADC values for both sides of the hypothalamus were significantly higher in the patient group than in the control group(p<0.05). In conclusion, we detected hypothalamic injuries in patients who showed hyperhidrosis after mild TBI. Based on the results, it appears that hyperhidrosis in patients with mild TBI is related to hypothalamic injury.

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Selective hypothermia: an experimental study on traumatic brain injury in rats

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2008000300021 ◽

2008 ◽

Vol 66 (2b) ◽

pp. 391-396 ◽

Cited By ~ 1

Author(s):

Amylcar Edemilson Dvilevicius ◽

Mirto Nelso Prandini

Keyword(s):

Traumatic Brain Injury ◽

Experimental Study ◽

Brain Injury ◽

Control Group ◽

Histopathological Analysis ◽

Group A ◽

Cortical Impact ◽

The Difference ◽

Group B ◽

The Right

OBJECTIVE: To evaluate the efficiency of selective hypothermia in the treatment of the traumatic brain injury in rats. METHOD: After the trauma produced for the model of cortical impact, a small craniectomy in the right frontoparietal region was carried through; after the procedure the animals had been divided in two groups of 15 each. Group A, without treatment with hypothermia (control group) and group B, treated with selective hypothermia for a period to 5 to 6 hours. After this time all the animals were sacrificed, their brains had been removed and histopathological analysis was carried through. RESULTS: Comparison between both groups was done using the counting of neurons injured for field. Counting in the control group n=15 had an average of 70.80 neurons injured for field against an average of 21.33 neurons injured for field in group B (submitted to the treatment with hypothermia), with n=15 also. The difference was statiscally significant. CONCLUSION: Based in the quantification of the neurons injured for field, the effectiveness of the treatment with selective hypothermia was demonstrated.

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Do Mild Traumatic Brain Injury Severity Sub-classification Systems Help to Identify People Who Go on to Experience Long-Term Symptoms?

Brain Impairment ◽

10.1017/brimp.2017.11 ◽

2017 ◽

Vol 19 (2) ◽

pp. 119-132

Author(s):

Alice Theadom ◽

Suzanne Barker-Collo ◽

Andrea Greenwood ◽

Priya Parmar ◽

Kelly Jones ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Mild Traumatic Brain Injury ◽

Classification System ◽

Injury Severity ◽

Contextual Factors ◽

Classification Systems ◽

Post Injury ◽

Mild Tbi

Objective: To identify the systems available to sub-classify mild traumatic brain injury (TBI) and to determine their utility in predicting 1-year outcome.Methods: A systematic review to identify mild-TBI sub-classification systems was conducted until March 2016. The identified systems were applied to a cohort ofN= 290 adults who had experienced a mild-TBI, and who had been assessed for post-concussion symptoms 1-year post injury. ANOVAs and regression models were used to determine whether each sub-classification system could distinguish between outcomes and to explore their contribution to explaining variance in post-concussion symptoms 1-year post injury.Results: Nineteen sub-classification systems for mild-TBI met the inclusion criteria for this review. The Saal (1991) classification system significantly differentiated the experience of post-concussion symptoms in our cohort 1-year post injury (F= 2.39,p= 0.05). However, the findings did not remain significant following correction for multiple comparisons and inclusion of socio-demographic and contextual factors in the regression model.Conclusions: Current sub-classification systems fail to explain much of the variance in post-concussion symptoms 1 year following mild-TBI. Further research is needed to identify the factors (including socio-demographic and contextual factors) to determine, who may be at risk of developing persistent post-concussion symptoms.

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